diff options
| author |   Leilk Liu <leilk.liu@mediatek.com> | 2019-06-05 11:07:04 +0800 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2019-06-06 22:24:00 +0100 |
| commit | 3e582c6e911ffe6c90b9f90324bdf85fc728d0c3 (patch) | |
| tree | d5d8eeffebce70504215a1422a8bb0801cff265c /drivers/spi | |
| parent | spi: Add spi driver for Socionext SynQuacer platform (diff) | |
| download | linux-dev-3e582c6e911ffe6c90b9f90324bdf85fc728d0c3.tar.xz linux-dev-3e582c6e911ffe6c90b9f90324bdf85fc728d0c3.zip | |
spi: mediatek: add SPI_LSB_FIRST support
this patch add SPI_LSB_FIRST feature support.
Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-mt65xx.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index 0cce6f0ba824..7f4dc1844789 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -131,8 +131,6 @@ static const struct mtk_spi_compatible mt8183_compat = { * supplies it. */ static const struct mtk_chip_config mtk_default_chip_info = { - .rx_mlsb = 1, - .tx_mlsb = 1, .cs_pol = 0, .sample_sel = 0, }; @@ -203,14 +201,13 @@ static int mtk_spi_prepare_message(struct spi_master *master, reg_val &= ~SPI_CMD_CPOL; /* set the mlsbx and mlsbtx */ - if (chip_config->tx_mlsb) - reg_val |= SPI_CMD_TXMSBF; - else + if (spi->mode & SPI_LSB_FIRST) { reg_val &= ~SPI_CMD_TXMSBF; - if (chip_config->rx_mlsb) - reg_val |= SPI_CMD_RXMSBF; - else reg_val &= ~SPI_CMD_RXMSBF; + } else { + reg_val |= SPI_CMD_TXMSBF; + reg_val |= SPI_CMD_RXMSBF; + } /* set the tx/rx endian */ #ifdef __LITTLE_ENDIAN @@ -607,7 +604,7 @@ static int mtk_spi_probe(struct platform_device *pdev) master->auto_runtime_pm = true; master->dev.of_node = pdev->dev.of_node; - master->mode_bits = SPI_CPOL | SPI_CPHA; + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; master->set_cs = mtk_spi_set_cs; master->prepare_message = mtk_spi_prepare_message; |